Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 117, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Nov 26, 2002, 3:35 AM CST for Caldwell County, Guadalupe County, Texas. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Nov 26, 2002, 3:35 AM CST (09:35 UTC)
- Expired
- Nov 26, 2002, 4:30 AM CST
- In force
- 55 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Caldwell County, TX, Guadalupe County, TX
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 9.6 hours before the alert went out and 221 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 298 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 616 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 307 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS54 KEWX 260935
SVRSAT
TXC055-187-261030-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
335 AM CST TUE NOV 26 2002
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
CALDWELL
GUADALUPE
* UNTIL 430 AM CST
* AT 335 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM FROM 5 MILES SOUTHEAST OF MARTINDALE TO 16
MILES SOUTH OF MARION...OR FROM 9 MILES SOUTHWEST OF LOCKHART TO 14
MILES NORTH OF FLORESVILLE...MOVING NORTHEAST AT 25 MPH.
* SEVERE THUNDERSTORMS WILL BE...
OVER LULING AT 405 AM
LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN
THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.
LAT...LON 3001 9768 2958 9820 2948 9811 2942 9810
2940 9786 2962 9770 2982 9745What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 26, 3:00 AM CST, 35 minutes earlier.
Area forecast discussion, Nov 26, 3:00 AM CST, 35 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 300 AM CST TUE NOV 26 2002 CURRENT WEATHER ANALYSIS... THE PAST 24 HOURS HAS GIVEN THE REGION A COLD FRONTAL PASSAGE FOLLOWED WITH A BUILDING RIDGE INTO THE REGION...CLOUDY SKIES AND OVERRUNNING PRECIPITATION. SURFACE WINDS NORTH TO NORTHEAST WITH TEMPERATURES IN THE 40S. 88D RADAR SHOWS SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS MOVING NORTHWARD ACROSS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. CURRENT MODEL GUIDANCE ANALYSIS... THE 00Z AVN MOS AND THE NGM MOS BOTH HAVE BELOW FREEZING TEMPERATURES FORECASTED ACROSS THE NORTHERN COUNTIES OF THE TEXAS HILL COUNTRY FOR WEDNESDAY MORNING. THE ETA TIME HEIGHT FOR THE HILL COUNTRY HAS 100 PERCENT R/H VALUES ASSOCIATED WITH BELOW FREEZING TEMPERATURES FROM 5 TO 8K TONIGHT INTO WEDNESDAY MORNING...WITH A VERY DRY LOWER LAYER AT THE SURFACE TO 5K. AVN PRECIPITABLE WATER IS AROUND 0.8 INCHES. THE GFS...ETA AND NGM ALL HAVE SIMILAR TRENDS IN THAT THEY BRING REINFORCING RIDGES INTO AND ACROSS THE REGION THROUGH THE WEEK. THIS FOLLOWS YESTERDAYS GUIDANCE INDICATING ANOTHER FRONT INTO THE REGION ON WEDNESDAY AND YET ANOTHER ON SATURDAY. 500MB GUIDANCE BRING KEEP SOUTHWEST FLOW WITH A DEEP LOW OVER SOUTHERN CALIFORNIA BAJA THROUGH 72 HOURS. CURRENT WEATHER OUTLOOK... THE BIG QUESTIONS IS...THE POSSIBILITY OF FREEZING RAIN ACROSS HILL COUNTRY COUNTIES TONIGHT INTO WEDNESDAY MORNING. LOOK FOR COLD AIR ADVECTION ASSOCIATED WITH NEXT FRONTAL SYSTEM TO MOVE INTO THE REGION LATE WEDNESDAY...TEMPERATURES TONIGHT AND WEDNESDAY NOT AS COLD AS EXPECTED AND PRECIPITABLE WATER VALUES OVER THE HILL COUNTRY TOO LOW TO PROVIDE ENOUGH MOISTURE. ONGOING RAIN/SHOWER ACTIVITY WILL CONTINUE THROUGH THE DAY WITH A DECREASING TREND LATE TODAY AND INTO THE NIGHT WITH MOST PRECIPITATION OCCURRING SOUTH OF THE HILL COUNTRY AS DIRER AIR CONTINUES TO FILTER SOUTHWARD WITH THE BUILDING RIDGE. PRELIMINARY NUMBERS... AUS 45/35/47/35/50 64320 DRT 45/35/45/35/50 54320 SAT 47/37/47/35/52 64320 .EWX...NONE.
Hazardous weather outlook, Nov 25, 5:42 AM CST, 21 hours 53 minutes before
TXZ171>173-183>194-202>209-217>225-228-261200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 542 AM CST MON NOV 25 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE... NO HAZARDOUS WEATHER IS EXPECTED TODAY OR TONIGHT. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. .DAYS 2 THROUGH 7... THERE IS A SLIGHT CHANCE OF FREEZING RAIN IN THE HILL COUNTRY TUESDAY NIGHT AND WEDNESDAY MORNING AS TEMPERATURES APPROACH THE FREEZING MARK. IF FREEZING RAIN DOES DEVELOP...ICE ACCUMULATIONS ARE EXPECTED TO BRIEF AND VERY LIGHT.
In the hours before
Local storm report, Nov 26, 3:33 AM CST, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
333 AM CST TUE NOV 26 2002
TIME(CST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0235 AM BULVERDE TX 1.75 INCH HAIL
11/26/02 BEXAR
PMThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 26, 2:47 AM CST | Severe Thunderstorm Warning | EWX | Blanco, Comal, Hays | 58 min |
| Nov 26, 3:21 AM CST | Severe Thunderstorm Warning | EWX | Travis | 54 min |
| Nov 26, 4:06 AM CST | Severe Thunderstorm Warning | EWX | Williamson | 54 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.